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| TRUE |
| 't' |
| 'true' |
| 'y' |
| 'yes' |
| '1' |
| FALSE |
| 'f' |
| 'false' |
| 'n' |
| 'no' |
| '0' |
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CREATE TABLE test1 (a boolean, b text); INSERT INTO test1 VALUES (TRUE, 'sic est'); INSERT INTO test1 VALUES (FALSE, 'non est'); SELECT * FROM test1; a | b ---+--------- t | sic est f | non est SELECT * FROM test1 WHERE a; a | b ---+--------- t | sic est
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�ƥ��å�: boolean�����ͤ�¾�Υǡ�������ľ�ܥ��㥹�ȤǤ��ޤ���(�㤨�С�CAST (boolval AS integer)�ϵ�ǽ���ޤ���)�� ���Τ褦��CASEʸ����Ѥ��뤳�ȤDz��Ǥ��ޤ��� CASE WHEN boolval THEN 'value if true' ELSE 'value if false' END�� ��9.12�⻲�Ȥ��Ʋ�������
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